Sky Unlimited Mail Engine – One-Time Payment, Lifetime Access

Enterprise Edition

Multi-Server SMTP Rotation

Bypass sending limits by balancing campaign loads across multiple accounts.

• Rotate 1,000 emails across 10 different accounts
• 1-click presets for Workspace, SES & Mailgun
• Built-in connection tester for custom SMTPs

Google Gemini AI Suite

A built-in AI engine for smart personalization and proactive spam compliance.

• Mass-generate unique, click-worthy subject lines
• Pre-flight content scanning for spam triggers
• Real-time deliverability optimization scoring

Live Tracking Analytics

Automatic embedding of 1×1 tracking pixels and secure redirect links.

• Instantly track recipient opens and link clicks
• Interactive Matplotlib dashboard visualization
• Real-time delivery trends and engagement stats

Audience CRM & Sync

A smart database that segments contacts and autonomously cleans your list.

• Auto-IMAP Sync removes hard bounced emails
• Stop wasting bandwidth on dead addresses
• 1-click bulk imports via Excel or CSV

Dynamic HTML Builder

A 3-in-1 workspace for visually stunning layouts and smart text variation.

• Visual canvas, raw code, and live web preview
• Advanced Spintax support ({Hi|Hello})
• Randomize content to defeat pattern filters

Precision Scheduler

Advanced task management for exact-minute campaign deployment.

• Queue immediate launches or future dates
• Schedule sending down to the exact minute
• Align delivery with target client timezones

Zero Subscriptions

Stop paying Lemlist or Mailchimp by the user. Sky runs locally with unlimited capacity for a one-time license.

Never Get Blocked

SMTP Load Rotation + Spintax Randomization + AI Spam Scanning ensures your emails hit the primary inbox, not spam.

Pristine Data Health

Automatic IMAP bounce-clearing preserves domain health, keeping your email addresses highly authoritative.